Transfuser.



,amount only of heated water is permitted to flow'through said coil theloss of heat from zsaid coil byradiation will be so great, com- -paredtothe amount of heat received from the water, that said coil will becomecom para- ,tivelycooL It is obvious that if the ilow were completelychecked the temperature of the jLfoil n would fall to approximately thetemperature of the surrounding atmosphere; It is evident. that the cockq may with the same result be placed atany point in the coil n or tubesconnected thereto.

By the construction of the parts here shown the'r c oil n. may bedisconnected from the ring c, and the vessel ct may also be removed t'rom said ring, thereby facilitating cleansing ofthe parts, particularlyof said Vessel.

` -v The vessel ci is'closed by means of .the removable cover s, whichlits over the Ilange b andmakes a practically air-tight joint therewith.Said cover s is provided with the funnel-.shaped vopening t, across themouth of which extends the metallic sieve u.4 Said opening s is adaptedto receivea small quantity of surgeons cotton, which acts as a'ilter topurify the air entering the vessel a., said cotton resting upon thesieve u, above mentionecL 'ervoir p is supplied with water at atemperature equallto or greater than the temperatreatqwhich itv isdesired to maintain the` solution to be transfused. The vessel ais.

filled-with thesolution for transfusion and the-parts assembled asabovedescribed, the

.I'QSBI'Voir p being so arranged that Water will flow jtherefrom to andthrough the coil n. The heated Water passingthrough the coil a impartsits-heat to the latter', and the heat of 'ihecoilis transmitted throughthe side ofthe vessel .a to the solution contained therein.

l Byregnlating-the ilowol water through the seL and the solutionisallowedv-toaowth coilbyz-means 'of 4the c'ock q the temperature.ofrthe. solution in the vessel aisjgoverned.

WVhen thesolntionis at the proper temperature, the extremities h h ofthe point-.s gg arel inserted into the' tissues or-veiuls.'ofthe l'OOdyWater in the reservoir 19 and regulating the flow through., the coilathe temperature of the solution may be maintained constant even thoughthe temperature of the Water in said reservoir should vary considerably.l

The pointy: (shown in Fig. 4) is designed for use when the solution isto betransfused into the veins, and consists, preferably,.of glass. Themethod of operation when employing this last-mentioned point issubstantially the same as the method of operation above described.

It is obvious that the number of points in use at any time is immaterialiu so` far as the principle of operation of our apparatus is concerned.

Vhat we claim as new., and desire to secure by Letters Patent, is-

l. In a transfuser, the combination of a vessel for containing theliquid -for transfusion, a detachable ring or hoop for encircling i saidvessel, means for controllably transfusing the liquid from said vesselinto the bloodpassages, and a cover for said vessel provided with aIilterfor removing impurities from the air entering said vessel duringtransfusion.

3. In a transfuser, the combination of a vessel for vcontaining theliquid for transfusion, means for transfusing the liquid from saidvessel into the blood-passages, a tube coiled to conform approximatelyto the exterior surface of said vessel, a ring or hoop removablysupporting said -vessel, means for suspending said ring or hoop, hookson said ring or hoop for detachably suspending said coil in proximity toand around said vessel,

and means for controllably supplying liquid to vsaid co.

i CARL H. ANDERSEN.

. WILLIAM R. GRADY.

l/Vitl'iesses:

' Amplia M. COX,

M'. M. BAQHMAN.

